How far away is your patient from being able to do decline board squats? Though it would be going against the ACP theory. The research on neovascularisation in tendons that I'v seen showed that by reducing it the pain got better - hense eccentric exercises worked well. If getting better with ACP then best not to try the eccn work right away I suppose. But it's just a thought for later on perhaps. Keep up the good work though sounds like your getting somewhere with the patient. I'm often guilty of getting upset when I can't get the results I want within a month or so so your doing well! What are your thoughts on the Mechanotherapy approach?